Roddick uses 16 g because 17 gauge would not last him more than 3 games if that, amount of topspin he uses versus what a amateur would put on the ball is about 10-12 times more. And i saw Andy using some kind of white string in his racket in Vienna, Did he go back to his old Pro hurricane?? What is going on? His strings are all white Now????

Uses them because he likes the way they play. Simple as that. Pros only use rackets for a couple of hours in practice, and change them at least every other ball change in matches. Roddick will not routinely bust Hurricanes in three games. In fact, I would bet that he couldn't break them routinely in three games if he tried. Yes, these guys put a ton of spin on the ball, but it really isnt a ton more than a good club player. And in some cases, its less. Spin does not make the player...